Academic interests
- Biogeochemistry
- Environmental geochemistry
- Aquatic chemistry
- Climate change
Background
- 2022 – : Doctoral Research Fellow, Dept. of Geosciences, University of Oslo
- 2020 – 2021: Master of Science, Environmental Geoscience, University of Oslo.
- 2015 – 2018: Bachelor of Science, Geosciences, University of Kiel, Germany:
Publications
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Hellevang, Helge; Ippach, Mats Rouven; Westermann, Sebastian & Nooraiepour, Mohammad
(2023).
Formation of giant Siberian gas emission craters (GECs).
EarthArXiv preprint platform.
doi:
10.31223/X59Q3K.
Show summary
The recent discovery of eight giant gas escape craters (GECs) in the Russian Yamal and Gydan peninsulas has challenged researchers for the past decade. Despite numerous proposed models, ranging from meteor impacts to gas explosions, none provide a comprehensive explanation for why the GECs are found only in this specific region. This study proposes a new general model for the formation of GECs in which local permafrost thinning is linked to the local geology, i.e., discrete conductive faults bring natural gas and heat to the base permafrost, deforming and melting the base leading to the development of domal gas and heat traps. Atmospheric warming results in further local thinning and eventually mechanical collapse. The morphology of the GECs initially reflects the concentric deformation above domal base-permafrost structures but are after a short time disguised by water and sediment infill, and over time peatification, and cannot be distinguished from e.g., thermokarst lakes. Thus, the true number of GECs may largely exceed those already discovered.
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Published
Nov. 2, 2022 10:48 AM
- Last modified
May 13, 2024 2:59 PM